Kind of depends on what you're going to use the boxes for and where they'll be used, but just general box making expansion shouldn't be a huge problem if you're joints are good and tight and glued up and clamped up right.. Plywood is pretty stable stuff for the most part..
I've made a bunch of boxes with simple butt joints even and haven't had one fall apart yet. Generally speaking most wood glues tend to be stronger than the wood itself after it sets up and dries if you clamp it correctly..
I figured it's time to change my signature so hold your breath. This is it.
Marty or Marty Farty if you feel mean.
Last edited by allpurpose; 11-08-2017 at 03:18 AM.